Metal ductwork running through a home, insulated and sealed at the joints

Same-day air duct service in West Covina, CA

Air Duct Servicesin West Covina, CA

West Covina homes were built across a century of styles, and their duct systems range from original metal in older neighborhoods to flex in attic retrofits. Our negative-air machine seals onto the main trunk and puts the whole system under suction first, then every run is scrubbed individually.

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Air Duct Service Co — West Covina, CA

Every air duct service, one West Covina call

Cleaning, inspection, repair, installation, sealing and commercial work - the full air duct service list for West Covina, with free inspections and the same crew on every job. This page covers air duct in West Covina, CA end to end — the services, the local picture and the ZIP codes served.

Technician feeding an air whip into a floor vent in a home living room

Cleaning & Care Air Duct Cleaning

Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each run is scrubbed individually, so years of dust and debris travel one way only — out of the ducts and into the machine. The visit also covers the returns, where a year of rotating pollen seasons mats together. Air Duct Cleaning in West Covina, CA starts with a real look at the problem — never a guess over the phone.

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Technician inspecting a ceiling return vent with a flashlight inside a home

Cleaning & Care Air Duct Inspection

Around West Covina, findings come back in plain language: what is clean, what needs work soon, and what can safely wait. A camera goes inside your ductwork so you can see exactly what's in there — buildup, damage or blockages — before we recommend anything. Inspections are free. It is why air duct inspection in West Covina, CA keeps getting recommended to neighbors.

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Technician joining a duct section back together in a home attic

Repair Air Duct Repair

Crushed, torn or disconnected ducts leak the air you pay to heat and cool. We repair and rebuild damaged sections so airflow is strong and even again. That local standard is what air duct repair in West Covina, CA means with Air Duct Service Co.

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Technician connecting a new flex duct to the furnace inside a home

Install & Replace Air Duct Installation

New duct runs for additions, remodels and system upgrades — sized, sealed and balanced so every room gets its share of heating and cooling. In Los Angeles County, attic installs are routed and strapped to avoid the sags and kinks that choke older systems here. That is air duct installation in West Covina, CA, done the way it should be.

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Technician brushing mastic sealant onto a duct joint in a home attic

Repair Air Duct Sealing

Leaky joints quietly waste a big share of your airflow. We seal seams and connections with professional mastic for a tighter, more efficient system. In Los Angeles County, a sealed system also keeps smoke-season air where it belongs - inside, filtered, instead of leaking at every joint. Air Duct Sealing in West Covina, CA runs on one standard: done properly, checked, and shown to you before we leave.

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Two technicians cleaning the ductwork in a home with a professional duct machine

Cleaning & Care Commercial Air Duct Cleaning

Offices, restaurants, retail and multi-unit buildings across West Covina — scheduled commercial duct cleaning with the same negative-air machine sealed onto the trunk, keeping your space comfortable, compliant and breathing clean. In Los Angeles County, property managers get a camera record of each system - useful documentation after smoke season for tenants and insurers alike. Commercial Air Duct Cleaning in West Covina, CA runs on one standard: done properly, checked, and shown to you before we leave.

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Need something else — a damper, a blower, a smoke problem, a bird in the flue? We cover all 27 air duct specialties. Call (888) 258-5005 and describe it.

Local conditions

West Covina ducts have West Covina problems

A duct system in West Covina may face wildfire smoke, valley heat, coastal moisture or all three across the year. This is what we actually find here, and what we check on every visit.

Inland heat bakes attic systems

Inland West Covina summers push attics to extremes, and the ductwork living there ages fast - tape dries, flex jackets get brittle, joints separate. Cooled air leaks overhead while the system runs long afternoons, and sealing is usually where the fix starts.

Old homes, original ductwork

Many West Covina neighborhoods carry duct systems installed decades ago - undersized returns, unsealed seams, runs that were never insulated. The equipment may have been replaced twice while the ducts stayed original, and the inspection shows what that means for airflow and dust.

Open-window seasons load the system

California's mild months are open-window months, and everything outside - pollen, road dust, construction grit - comes in and a share of it settles into the returns. By the time the house closes up for summer heat or winter rain, the system has stored a season of it.

ADUs, conversions and additions

Garage conversions and accessory units are going up across West Covina, and their ductwork is often the last thing planned - tied into a trunk that was never sized for another room. Those spaces stay uncomfortable until the run is installed, sealed and balanced properly.

West Covina sits in Los Angeles County, and the ZIP list at the bottom of this page covers 3 serviceable ZIP codes — 91790 through 91792. The closest served neighbors are Covina, La Puente, Industry, and every one of them is covered by the same crews, the same day, under the same number: (888) 258-5005.

Cold air duct? Warm answer.

Same-day service, free estimates, licensed & insured — and a air duct that lights when you click the remote.

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How it works

How it works in West Covina, CA

Every West Covina visit runs the same way — booked in one call, checked inside the ducts, and finished with the before-and-after shown to you, not just described.

1. You call, we book

Call (888) 258-5005 and tell us what the house is telling you — dust that comes back within days, rooms that never quite cool, airflow that feels weak. We book a local West Covina tech, same day whenever a slot is open.

2. Free duct inspection

The visit starts with a look inside the ductwork — at the registers and at the main trunk — so the diagnosis is something you can see for yourself, and the inspection is free.

3. The work itself

A negative-air machine seals onto the main trunk and pulls debris out under vacuum while each register is cleaned in turn, so the dust leaves through the machine — not into your West Covina home.

4. Before and after, shown

You see inside the ducts before we start and after we finish, and any work beyond the cleaning is priced and agreed before it begins. Estimates are always free.

Reviews

West Covina reviews

5 stars — based on 100+ reviews. West Covina homeowners rate Air Duct Service Co five stars across Google and Facebook, and they mention the same things: the free inspection, the sealed negative-air setup that keeps the dust out of the house, and ducts they could see before and after. Call (888) 258-5005 and put us to the same test.

Questions

Asked the way West Covina asks

The smoke is gone but my house still smells like it - why?

Because the ductwork kept it. Fine smoke particles settled into the dust inside your trunk and returns during the event, and every cycle since has released a little back into the rooms. In West Covina, a cleaning from the main trunk out removes that stored residue, and the startup smell goes with it.

How often should ducts be cleaned in California?

Every few years for most West Covina homes - sooner after a heavy smoke season, a remodel, or in allergy households. Coastal and inland systems age differently, so we camera-inspect free and show you your own trunk; the right interval comes from what is actually in there.

How do you clean the ducts - what is the process?

Our negative-air machine seals onto the main trunk duct and puts the whole system under suction first. Then each individual run is scrubbed on its own, so loosened dust and smoke residue travel toward the trunk and into the machine - never back into your rooms. We finish at the registers and show you the before-and-after on camera.

What are the signs my ducts are leaking?

Rooms that lag the thermostat, long AC cycles on ordinary days, dust returning soon after cleaning and weak airflow at distant registers. In attic systems across West Covina, heat-dried tape and shifted joints are the standing culprits, and mastic sealing is the lasting fix.

My home is older with original ducts - worth inspecting?

Yes - original ductwork is the most common hidden cause of comfort and dust complaints in older West Covina homes. The camera shows buildup, leaks and undersized returns plainly, and you can decide what, if anything, is worth doing from evidence.

Do you give prices over the phone?

No — and be wary of anyone who does. Every duct system is a different size and condition, so a phone price is a guess that changes at your door. Our inspections and estimates are free: a tech looks inside your actual ductwork first, then gives you one clear price before any work starts.

Where we work

West Covina, CA ZIP codes we serve

Air Duct Service Co is a national company with local technicians serving West Covina street addresses across the ZIP codes below — same-day service and free estimates, every day 8 AM – 8 PM. More of California is covered from our California page. The West Covina list below covers 3 ZIP codes, 91790 through 91792.

91790 91791 91792

Don't see your ZIP? West Covina also uses P.O. Box and single-organization ZIP codes that have no street addresses — call (888) 258-5005 and we will confirm coverage for your street address on the call.

Also serving nearby: Covina, CA · La Puente, CA · Industry, CA · Walnut, CA · Irwindale, CA · Baldwin Park, CA.